Laserfiche WebLink
Tab1e 5 <br />Arable Land Classification Standards <br />U. S. B. R. Yampa Report - 1937 <br />ities :Arable - Class 1 <br />,� <br />Depth <br />Arable - Class 2 <br />:Fine sandy loam to clay <br />:loam <br />:18 inches good plow soi� <br />:42 inches penetrable to <br />:roots and water. <br />:Loamy sand to friable� <br />:clay <br />:12 inches good plow ;;oil. <br />:30 inches penstrable to <br />:roots and water. <br />:None Black. Maximum of :Black (pH, 9:0 or less) � <br />Alkali :total salts - 0.2g :Max. total salts - 0.5� <br />:NO loose rock nor cobble :No more than has been. re- <br />Rock :to bother cultivation :moved from similar land <br />:General grade 5% maximum :Smooth 5-lOB slopes or 5� <br />:for large smooth bodies, :if rough; as much grading <br />Topography :needing no grading and :and leveling as similar <br />:little leveling. :land new cultivated has had. <br />:Seepage not apt to start, :May seep, but can drain T <br />Drainage :but can be drained cheaply :without prohibitive� cost. <br />:if required. :artificially <br />*Where soil depth over gravel, coarse sand, or broken rock, approaches <br />the minimum for its class, texture must be at least as heavy as fi:ne <br />sandy loam. <br />No Class 3 land was specifically indentified in the Cliffs-Divide <br />Report, but the report states (Page 25) that "It is judged irom cons:ide:r- <br />ation of all factors involved that S0� of the Class 4P lands wou].d be <br />Class 3 and would not be limited in use". The Cliffs-Divide Report <br />classified only those lands included as a part of the original Toponas <br />ProjeCt - which did not include land irrigated directly from the Yarnpa <br />River. The 1937 Bureau report r_l.assified the non--irrigated .lands in the <br />Yampa area but not those which were already under irrigation. In li_eu <br />of incurring the considerable expense of makinq a detailed field <br />classification at this time, the percentage of lands in the various <br />classifications in these reports has been determined and these per- <br />centaqes applied to irrigated and irrigable lands within the irrigat.ion <br />service area of the Yamcolo Projeet. The results are summarized in <br />TabZes 7 and 8. <br />Table 7 <br />Land Classification Data <br />U.S.B.R. Yampa Report - 1937 <br />Item <br />Acres classified <br />$ of Total <br />Classification <br />Class 1 Class 2 Class 3 <br />2074 5750 108 <br />26 73 1 <br />III - 8 <br />Total <br />7932 <br />1 <br />' <br />1 <br />' <br />1 <br />1 <br />' <br />' <br />1 <br />1 <br />' <br />ll <br />I , <br />' <br />' <br />1 <br />' <br />' <br />� ' <br />� <br />